Insulating-support for switchboard-conductors.



Patented 0st. 30, |900.

(Application led Jxn. 2, 1900.)

G. wmGHT'sL c. AALBURG. INSULATING SUPPORT FR SWITGHBARD CONDUCTRS.

. (No Model.)

/N VEA/ Toffs A TTU/ME y.

UNITED STATES PATENT OEurer.Q

GILBERT WRIGHT AND CHRISTIAN AALBORG, OF YVILIIINSBURG, PENNSYL- VANIA,ASSIGNORS TO THE IESTINGHOUSE ELECTRIC AND MANUFAC- TURING COMPANY, OFPENNSYLVANIA.

INSULATING-SUPPORT FOR SWITCHBOARD-CONDUCTORS.

SPECIFICATION forming part of Letters Patent No. 660,878, dated October30, 1900.

Application filed January 2, 1900. serial No. l2. kNo model.)

To all .whom t may concern.' not necessarily, of oblong andsubstantially Re it known that we, GILBERT WRIGHT and rectangular formandhavingin two ofits oppo` CHRISTIAN AALBORG, citizens of the Unitedsite edges substantiallysemicirculargrooves States, residinginVVilkinsburg,intl1e county for the reception of a switchboard-conductor5 of Alleghenyand State of Pennsylvania, have Si. The block +L isprovided with an aperture 55 invented a new and useful Improvement inthat is oblong in cross-section and extends Insulating-Supports forSwitchboard- Confrom face to face centrally ot' the block, duclors, ofwhich the following is a specitcathrough which projects a bolt 7 foratta-chtion. ing one or more of such blocks to the sup- Io Our inventionrelates to switchboards for porting-bracket 2. The aperture through 6ouse in connection with systems of electrical which this bolt extends ismade oblong and distribution, and has particular reference to largerthan the bolt in order that the block the means employed for supportingthe conmay be adjusted laterally, as may be found d uctors at the rearside of such switchboards. necessary. Surrounding the central apertureThe object of our invention is to provide a 6 at one side of the blockis a deep recess 8, 65 means forsupporting conductors uponswitchpreferably flaring outwardly, as indicated in boards which isespecially adapted to the sup- Figs. 2 and 4, and the opposite face ofthe port of any desired number of such conducblock is provided with acorresponding` boss tors. 9, which surrounds the central aperture.

2o With this end in view we have devised the Then a plurality of theseblock are assem- 7o f' means shown in the accompanying drawings, bledupon the supporting-bolt 7, the boss 9 on in whichthe upper block of theset projects into the Figure l is a perspective View of the rearcorresponding recess 8 in the face of the next of a switchboard, showingone arrangement block and the boss on the second into the corof orinsulating' conductor-supports. Fig. respondingrecessin the face ofLhethird, and 75 2 is a view, partially in side elevation and so on, thesize of each boss being such that partially in section, of two elementsof our an air-space is left between the outer surface insulating device,one of which is superposed of the boss and the corresponding surface ofupon the other, and a portion of a supportthe recess, as indicated inFigs. 2, 3, and e.

3o ing-bracket; and Fig. Sisatransverse section Each bracket 2 isprovided with as many 8o on line III III of Fig. 2. Fig. 4. is a View,upwardly-projectinghollow bosses 21as there partially in front elevationand partially in are blocks 4E, which are intended to rest disection, ofthe insulating elements shown in rectly upon the bracket. rlhe aperture6 in Fig. 2. each boss 2^"L is preferably of the saine size and Theswitchboard l may be of any desired shape as the apertures 6 in theblocks 4, and 85 size and suitable construction and may have theexternal form and dimensionsot'each boss upon its face any number, kind,and arrange- 2"? are such that its upper end will be engaged ment ofswitches, circuit-breakers, measurby the bottom of the recess in theblock 4: that inginstruments,orotherdevices,(not shown,) is formed bythe boss 9, andan air-space will 4o such as are ordinarily employed insuch rebe provided between the outer wallet the boss 9o lations. Therear of the board, as shown, is 2^l and the inner wall of the boss 9. Aconprovided with a suitable number of supportsiderable space is alsoprovided between the ing-brackets 2, to which are bolted the deloweredge of boss 9 and the bracket. (See vices fordirectlysnpporting theswitchboard- Fig. 2.)

conductors 3 and insulating them from each The arrangement of the blockse in hori- 95 other. The means devised by us forsupportzontally-disposed sets is indicated in Fig. l ing such conductorscomprises any desired of the drawings, it being readily seen by rei"-nnmber of separable parts or units, each of erence to said figure thatthe conductors are which consistsofablock 4, ofsuitable insulatlocatedin the grooves 5 of adjacent blocks 5oingmateriahsuchasporcelain,preferably,but at and that the apertures Gand G permit of roo lateral adjustment ot' the blocks to clamp theconductors securely in position, after which the blocks are clamped tothe brackets by means of the bolts 7 and their nuts.

It will be readily seen that the construction shown and described issuch that the surface distance between any two conductors and betweeneach conductor and the supportingbolt is very large and that by theemployment of units ot this character, all of which are alike in Aform,any number maybe assembled to form a vertical set which may be foundnecessary or desirable or that one only may be employed tor eachsug'iporting-bolt, as indicated in l. lt will be further understood thatthe form of the grooves 5 may be varied to suit conductors ot' anycross-sectional form and that the form, dimensions, and arrangement ot'parts may be otherwise varied without departing from the spirit andscope ot our invention.

l. An insulating-support for switchboardconductors havingan oblongcentral aperture1 transverse side `grooves, acontinuous recesssurrounding the aperture at one end and a corresponding boss on theopposite end, substantially as described.

2. Supporting means for switchboard-conductors eon'lprising a pluralityof insulatingblocks each having an oblong, central aperture surroundedat one end by a recess and at the other end by a boss, the boss on each'block fitting into recess of the ,next block in the set, a bracket.having a hollow boss tting into the recess toi-med bythe boss on thelast block ofthe set and a bolt extending through said apertures,substantially as described.

3. Supporting means for switchboard-conductors com prising a pluralityof insulating blocks each of which has a central aperture, side grooves,a recess surrounding the aperture at one end and a corresponding hollowboss at the opposite end, the recesses and bosses of adjacent blocksAltting into each other, a bracket having an apertured boss tting intothe boss on the bottom block, and a bolt extending through theapertures.

Ll-. An insnlat ing su pporting-block for electric conductors having acentral aperture and side grooves, a recess surrounding the aperture atone end and a corresponding boss surrounding the aperture at the othercud, substantially as described.

5. An insulating su pporti iig-block for electric conductors, having anoblong central aperture, side grooves and a recess and a hollow bossrespectively surrounding` said aperture at opposite faces of the block.

(3. A switchboard havingr a plurality of laterally-projectingr bracketseaeh of which is provided with a plurality of upwardly-projecting hollowbosses and a plurality of instilatingblocks severally titting over saidbosses and clamped thereto.

7. Aswitchboard havinga plurality ol laterally-projecting brackets, eachot' which is provided with a plurality ot' upwardly-pro* jectinghollowbosses, and a plurality ot' insulating-blocks severally provided withbottom recesses of greater length and width but of less depth than thebracket-bosses which are seated and clamped therein.

S. An insulating support for switchboardconductors having a centralaperture, trailsverse side grooves, a recess surrounding the aperture atone end and a corresponding boss on the opposite end, substantially asdescribed.

9. A support for electric conductors comprising a block otnon-conducting material having a central aperture, transverse sidegrooves, arecess around the aperture at one end and a corresponding bosson the opposite end and a supporting-arm to which said boss is clamped.

lO. An arm or bracket provided with a plura-lity of upwardly-pro'jectinghollow bosses in combination With a plurality of insulating blocksseverally fitting over said bosses and clamped thereto.

ln testimony whereof we have hereunto subscribed our names this 27th dayof December, 1890.

Gl LB ERT WRlGH'l. CHRISTIAN AALBORG.

Witnesses:

JAMES B. YOUNG, CARL G. NenAi-Ltir.

